Which row correctly describes a medical use and an industrial use of radioactive isotopes?
Medical
Industrial
A
Cancer treatment
Coal stations
Power stations
с
Sterilising medical
equipment
Skin products
Sterilising medical
equipment
Radioactive dating
D
Extraction of crude oil

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins